Offset Nutrunner QST-COT for Automation

Offset Nutrunner QST-COT for Automation

The Offset Nutrunner QST-COT is specifically engineered to solve accessibility challenges in complex assembly lines. Its unique design, which positions the fastening axis parallel to but offset from the motor axis, allows it to reach bolts located near walls, inside narrow recesses, or in spaces where standard straight or angle nutrunners cannot operate.

The QST-COT series combines Atlas Copco’s proven technology with a torque accuracy of +/- 2.5%. The nutrunner features built-in torque transducers and angle sensors as standard, offering exceptional durability for intensive use in fixtured and robotic applications. Thanks to the Offset design, high-density Multi-Spindle systems can be designed while maintaining smart fastening performance and full monitoring via Power Focus 6000 or PowerMACS 4000 controllers. The system supports Hot Swap and guarantees a service life of one million cycles between maintenance.

Key Features of Offset Nutrunner QST-COT

• Limited Access Solution: The Offset configuration is ideal for tightening bolts in tight corners or areas with structural obstructions.
• Uncompromising Precision: Full control over torque and angle, complying with strict quality standards (ISO5393).
• Space Optimization: Enables compact design for multi-head fastening fixtures in automated production lines.
• Minimal Maintenance: Designed for continuous operation with exceptionally long service intervals, reducing line downtime.

Frequently Asked Questions

Q: When should I use a QST-COT offset nutrunner instead of a straight one?
A: When the distance between the bolt center and a nearby obstruction is very small, or when high-density nutrunner clusters (Multi-Spindle) are required that a straight configuration cannot accommodate.

Q: Does the Offset model support angle control?
A: Yes, the QST-COT model includes a built-in angle sensor and allows for full control over the fastening strategy (torque, angle, yield point, etc.).